Leading archivists and museums worldwide recommend polyester for long-term storage of stamps, records and other valuable documents. The LB sheet range is a practical system with combinations of plyester strips and pockets welded to a card background. The pocket sizes are designed with the collector in mind. They are particularly useful for topical stamp collections or adding speical items to existing country albums. You can design any combination or grouping you desire. Mint sheets, maxi-cards, FDCs booklets, singles, block sheets, even postal stationery. The blank system is also ideal for storing and displaying new stamps prior to receiving your new supplements. Fits our 13 Ringbinder Albums KSF13 or springback KSFLB.